comburent

Air is used as comburent. The plant consists of 12 fuel cell stacks of 75 unit cells.

Pure hydrogen and air were used as fuel and comburent, respectively [9].

That representation shows that independently of the types of components such as concentration of catalysts, electrolyte, material of the bipolar plate and number of unit cells, and the working conditions as temperature, flow of fuel and comburent, relative humidity of the gases, active area, and others, all together, can be represented in the same graphic.

Apart from that, different working conditions need to be taken into account, such as flow of comburent and fuel and relative humidity of gases and temperature, again to name only some of them.